NEC SV8500 Operation And Maintenance Manual - 6-A: System Failure
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CHAPTER 3
System Messages
6-A: System Failure
This message displays when any of the following faults are detected:
•
Power failure
•
FAN failure
•
Fuse blowing
•
In-Frame abnormal temperature
Probable cause for failure
Note 1:
When abnormal PWR Supply is detected, the alarm lamps light as the following, according to the na-
ture of its failure.
(1) When either one of the systems of PWR Supply circuit cards in the IMG is faulty, MN lamp turns on.
(2) When either one of each system of PWR, GT, and PLO circuit cards in the TSWR is faulty, MN lamp
turns on.
(3) When either one of the pair of PWR Supply circuit cards in the MISCR is faulty, MJ lamp turns on.
(4) When both system of PWR Supply circuit cards within the same IMG are faulty, MJ lamp turns on.
(5) When both system of PWR Supply circuit cards in the TSWR are faulty, MJ lamp turns on.
(6) When both system of GT circuit cards in the TSWR are faulty, MJ lamp turns on.
(7) When both system of PLO circuit cards in the TSWR are faulty, MJ lamp turns on.
(8) When both system of PWR Supply circuit cards in the MISCR are faulty, MJ lamp turns on.
Default Alarm
Default Grade
Grade Modified
Lamp Modified
NON
3
(FIXED)NON
(FIXED)3
1:
XX00
XXXX
00XX
XX00
2:
0000
0000
0000
0000
3:
0000
0000
0000
0000
4:
0000
0000
0000
0000
5:
0000
0000
0000
0000
6:
0000
0000
0000
0000
7:
0000
0000
0000
0000
8:
0000
0000
0000
0000
9:
0000
0000
0000
0000
b7
b6
b5
b4
b3
b2
b1
b0
1
2 3
4
5
b0:
Input power (-48V) down/abnormal detected
b1:
PWR Supply abnormal detected
Note 1
b2:
PWR Supply Fuse Blown detected
b3:
Abnormal temperature MJ (70ºC [158ºF])
b4:
Abnormal temperature MN (60ºC [140ºF])
b5:
(0 is fixed.)
b6:
FAN failure detected
Note 2
1